- Conference date: 20-25 July 2003
- Location: Portland, Oregon (USA)
We present an overview of computational techniques for simulating the thermal cookoff of high explosives using a multi‐physics hydrodynamics code, ALE3D. Recent improvements to the code have aided our computational capability in modeling the response of energetic materials systems exposed to extreme thermal environments, such as fires. We consider an idealized model process for a confined explosive involving the transition from slow heating to rapid deflagration in which the time scale changes from days to hundreds of microseconds. The heating stage involves thermal expansion and decomposition according to an Arrhenius kinetics model while a pressure‐dependent burn model is employed during the explosive phase. We describe and demonstrate the numerical strategies employed to make the transition from slow to fast dynamics.
- Thermal models
- Hydrological modeling
- Computational methods
- Physics demonstrations
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